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Strep Antistreptolysin O Titer (Blood)
This test looks for antibodies that your body made when fighting off group A Streptococcus bacteria. These bacteria cause strep throat.
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Free and Bound Triiodothyronine (Blood)
This test measures the level of triiodothyronine (T3) in your blood. T3 is a type of hormone made by your thyroid gland.
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Free and Bound T4
This test measures the level of the hormone thyroxine (T4) in your blood. This test can show whether your thyroid gland is overactive (hyperthyroidism) or underactive (hypothyroidism).
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T and B Lymphocyte and Natural Killer Cell Profile
This test finds and counts 3 types of white blood cells in your blood. White blood cells help your body fight off infections and illness.
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Tartrate-Resistant Acid Phosphatase
This test looks for a substance that can appear in your blood if you have hairy cell leukemia.
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Tay-Sachs Disease
This test looks for specific gene changes in a sample of your blood. These gene changes cause most cases of Tay-Sachs disease.
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Insect Stings in Children
Insect stings can occur anywhere on the body and can be painful and frightening for a child. Most insect stings cause only minor discomfort. Most stings are from honeybees or yellow jackets, also called ground hornets.
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Anatomy of the Respiratory System in Children
A detailed anatomical description of the respiratory system, including simple definitions and labeled, full-color illustrations.
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Amenorrhea in Teens
Amenorrhea is when a girl's menstrual bleeding (period) doesn't occur.
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